JPH01283559A - Thermal development color photosensitive material with improved image preservation and image receiving member of same - Google Patents

Abstract

PURPOSE:To obtain the title photosensitive material which has a less tendency for generating a stain and an improved shelf-life in an obtd. image by incorporating a specified compd. in at least one layer of photographic layers contd. in the photosensitive material. CONSTITUTION:The photosensitive material comprises the photographic constituting layers which contain a photosensitive silver halide, a reducing agent, a dye affording substance and a binder, and is mounted on a supporting body, and the compd. shown by formula I is incorporated in at least one layer of the photographic constituting layers. In formula I, R<1> and R<2> are each alkyl, aryl, aralkyl or a heterocyclic ring residual group which may be substd. R<1> and R<2> together with each other may form a ring, A<1> and A<2> are each carbonyl or sulfonyl group, B<1> and B<2> are each oxygen atom or a N-R group (wherein R is hydrogen atom or alkyl group), (n) and (m) are each 0 or 1. Thus, the photosensitive material which has the less tendency for generating the stain in the obtd. image and the excellent shelf-life of the image is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heat-developable color photosensitive material, that is, a photosensitive material that is developed by heat treatment to obtain a color image.

The present invention also relates to an image receiving member having an image receiving layer that receives an image by transferring a dye from a photothermographic material.

[Background of the invention]

A photosensitive material (thermally developable photosensitive material) that can easily and quickly form an image by carrying out a dry process using heat in the development process is well known. Publication No. 43-4924, "Fundamentals of Photographic Engineering" for silver halide photography (published by Corona Publishing in 1879)
pages 553-555, and Research Disclosure magazine, June 1978 issue, pages 9-15 (RD-1702
9) etc.

There are two types of heat-developable photosensitive materials: those that produce black-and-white images and those that produce color images.1 In recent years, in particular, attempts have been made to develop heat-developable color photosensitive materials that produce color images using various dye-providing substances. .

There are various methods for heat-developable color photosensitive materials, such as a method in which a color image is obtained by releasing or forming a diffusible dye through heat development and then transferring the dye (hereinafter referred to as the transfer method). Although it requires an image receiving member for transfer, it is superior in terms of image stability, clarity, and processing simplicity and speed. This transfer method heat-developable color photosensitive material and image forming method are described in, for example, JP-A-59-12431 and JP-A-59-159159.
No. 59-181345, No. 59-229556, No. 60-2950, No. 61-52643, No. 6L61
No. 158, No. 61-61157, No. 590.1805
No. 50, No. 61-132952, No. 61-13295
2 publications, U.S. Patent No. 4,595,652, U.S. Patent No. 4
, No. 590.154 and No. 4,584,267.

However, with the heat-developable photosensitive materials that have been developed or proposed in the past, after an image is obtained, the white background becomes colored (for example, yellows) due to storage over time, resulting in so-called staining. Sometimes.

[Purpose of the invention]

An object of the present invention is to solve the problems of the prior art. That is, an object of the present invention is to provide a heat-developable photosensitive material that is less likely to cause staining in the obtained images and has good storage stability.
and to provide an image receiving member.

[Structure of the invention]

As a result of intensive research to achieve the above object, the present inventors have discovered a heat-developable color photosensitive material having a photographic constituent layer containing at least a photosensitive resin, a reducing agent, a dye-providing substance, and a binder on a support. characterized in that one or more of the photographic constituent layers contains a compound represented by the following format (I) (hereinafter referred to as the "compound of the present invention"). We have found that the above problems can be solved by a heat-developable color photosensitive material that can be used with or without a transfer method. is more preferable.

In addition, in an image receiving member having an image receiving layer that receives an image by transferring a dye from a heat-developable photosensitive material, the image receiving layer may have the following format [I
It has been found that an image receiving member characterized by containing a compound represented by the following formula meets the above object. This image-receiving member can exhibit its effects both when the photosensitive material is a photothermographic material having the above structure and when it is a photothermographic material that does not contain the compound represented by the -format [i].

A combination of the heat-developable color photosensitive material of the present invention and the image receiving member of the present invention can produce excellent effects.

-Format (1) % Formula % R1 and R2 represent an optionally substituted alkyl group, aryl group, aralkyl group, or heterocyclic group.

R'sR'' may also join together to form a ring.

A1. , Az represents a carbonyl group or a sulfonyl group.

B1 and B2 represent an oxygen atom or NR. Here, R represents a hydrogen atom or an alkyl group.

n and m represent O or 1.

The present invention will be explained in further detail below.

Examples of the compound represented by the general formula [I] used in the present invention include compounds represented by the following general formulas C11) to [■].

R3 and R4 represent the same meaning as R' and R2 in -format (1), and R3 and R4 may be the same or different. When R3 and R4 are an alkyl group or an alkenyl group, the number of carbon atoms is preferably 6 to 20, more preferably 10 to 20.

Examples of R: l, R4 include hexyl group, octyl group,
Decyl group, pentadecyl group, octadecyl group, hexenyl group, octenyl group, decenyl group, pentadecenyl group,
Examples include octadecenyl group. these are,
It may be linear or branched.

When R3 and R4 are aralkyl groups, those having 7 to 26 carbon atoms are preferred, such as benzyl groups and phenethyl groups. When R3 and R4 are a cycloalkyl group, examples thereof include a cyclopentyl group and a cyclohexyl group.

When R and R4 are aryl groups, those having 6 to 10 carbon atoms are preferred, and examples thereof include phenyl and naphthyl groups.

The heterocyclic residue is preferably a 5- or 6-membered heterocycle containing oxygen, nitrogen, or sulfur as a petro atom, such as a pyridyl group, a furyl group, a pyrrole group, and the like.

Each of these groups may have a substituent, and therefore includes those having a substituent, but examples of the substituent include an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, Amino group, alkyl or aryl substituted amino group, acylamino group, sulfonylamino group, alkyl or arylsulfonyl group, alkyl or aryloxycarbonyl group, carbonyloxy group, hydroxyl group, substituted or unsubstituted carbamoyl group, substituted or unsubstituted sulfamoyl group group, a cyano group, a nitro group, or a halogen atom, and these substituents may be further substituted.

R3 and R4 may jointly form a ring.

Preferably, this ring is a 5-, 6- or 7-membered ring.

Examples of atoms constituting the ring include carbon, oxygen, nitrogen, and sulfur.

When R3 and R4 form a ring, this ring may be further fused with another ring.

Examples of fused rings include benzene ring, naphthalene ring,
Examples include a pyridine ring and a pyrimidine ring.

These rings may have substituents.

Examples of substituents include alkyl groups, aryl groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups, amino groups, alkyl- or aryl-substituted amino groups,
Acylamino group, sulfonylamino group, alkyl or arylsulfonyl group, alkyl or aryloxycarbonyl group, carbonyloxy group, hydroxyl group, substituted or unsubstituted carbamoyl group, substituted or unsubstituted sulfamoyl group, cyano group, nitro group or halogen atom These substituents may be further substituted.

Another preferred example of the compound represented by the general formula [I] is one represented by the formula (II[).

II R5 and R6 have the same meanings as R3 and R4 in general formula (n), and may form a ring like R3 and R4. Similarly, the ring may be fused with another ring.

Furthermore, as other preferable examples of compounds represented by the general formula [I], compounds represented by the following formulas (IV) to (Vl) can be mentioned.

R? , R11 have the same meanings as R3 and R4 in the general formula (III), and can form a ring like R3 and R4 or can be fused with another ring.

- Still another preferable example of the compound represented by formula [I] is a polymer containing an acid anhydride.

Specific examples include polymers represented by the following formula [■].

-Math [■] R7, R,. may be the same or different and represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, an alkenyl group, or an aryl group. Specific examples include methyl, ethyl, n-propyl, and isopropyl groups.

A represents a monomer having an ethylenically unsaturated group.

Specific examples include styrene, vinyl acetate, ethyl acrylate, butyl acrylate, vinyl chloride, methyl methacrylate, acrylonitrile, and acrylamide. Specific examples of these and others are
Examples include those described in No. 1-61158.

x and y are the mole percentages of both vehicle mass bodies and can be changed arbitrarily, but it is preferable that X is 10% or more of the total.

Another preferred example of the polymer represented by the general formula [1] is a compound represented by the following formula [■].

General formula [■] R11, R, □, R1, may be the same or different, hydrogen, alkyl group, aryl group, aralkyl group, halogen, carbamoyl group, sulfamoyl group, alkoxy group, nitro group, Represents a cyano group, a hydroxyl group, etc.

A, x, and y have the same meanings as in the above-mentioned formula [■].

Particularly preferably used compounds in the present invention are compounds represented by formula (II), rI[[), (IV), or acid anhydrides represented by the above general formulas [■] and [■]. It is a polymer containing

Next, specific examples of compounds represented by general formula CI) that can be used in the present invention are listed below. However, as a matter of course, the present invention is not limited to this.

x:y=50:50 x:y=50:50 x:y=50:50 x;y=50:50 x:y=10:30 When the compound of the present invention is contained in a photothermographic material ,
It may be contained in any photographic constituent layer, such as a photosensitive emulsion layer,
It can be contained in any of the non-photosensitive layers. It is preferably contained in the non-photosensitive layer, and more preferably in the N furthest from the support (usually a protective layer). The preferred addition amount is the compound of the present invention per 1 d of light-sensitive material, and in the case of a polymer, the amount is 1. OX10
-'~1x10-1 mol, more preferably 1.0x10
-' to 5X10-'' moles.

Further, the addition method may be by dissolving it in an appropriate solvent such as water or methanol, or adding it by emulsifying and dispersing it with a high boiling point organic solvent together with other hydrophobic compounds as necessary. .

Further, when the compound of the present invention is contained in an image receiving member, it is preferably added in the same range as per 1 d of the above-mentioned photosensitive material per 1% of the image receiving member.

When the image-receiving layer is made of a hydrophilic binder, the addition method may be the same as in the case of the photosensitive material described above, or when the image-receiving layer is hydrophobic, it is added by dissolving it in a suitable hydrophobic solvent. The compounds of the present invention can be synthesized by known acid anhydride synthesis methods.

Moreover, some compounds are commercially available and can be used.

Two or more kinds of the compounds of the present invention may be used in combination.

The heat-developable photosensitive material of the present invention contains a dye-providing substance.

As the dye-donating substance used in the present invention, for example, JP-A No. 6
2-44737, Japanese Patent Application No. 60-271117, Japanese Patent Application No. 61-11563, couplers forming non-diffusible dyes, such as the leuco dyes described in U.S. Pat. No. 475,441, or e.g. US Patent 4,23
Although an azo dye used in the heat-developable dye bleaching method described in No. 5゜957, etc. can be used as the dye-providing substance, it is more preferable to use a diffusible dye-providing substance that forms or releases a diffusible dye. In particular, it is preferable to use a compound that forms a diffusible dye by a coupling reaction.

Diffusible dye-providing substances that can be used in the present invention will be explained below. The diffusible dye-donor substance may be one that participates in the reduction reaction of the photosensitive silver halide and/or the organic silver salt used as necessary, and can form or release a diffusible dye as a function of the reaction. Depending on their reaction mode, some dye-donors act in a positive function (i.e., those that form a negative dye image when using negative-working silver halide) and others act in a negative function. It can be classified as a positive-working dye donor (that is, one that forms a positive dye image when negative-working silver halide is used).

As a negative dye-donating substance, for example, U.S. Pat.
No. 63.079, No. 4,439,513, JP-A-59
-60434, 59-65839, 59-71
No. 046, No. 59-87450, No. 59-88730
Examples include reducible dye-releasing compounds described in the specifications of No. 59-123837, No. 59-124329, No. 59-165054, and No. 59-164055.

Other negative dye-providing substances include, for example, U.S. Pat.
, No. 474,867, JP-A-59-12431, No. 5
No. 9-48765, No. 59-174834, No. 59-
No. 776642, No. 59-159159, No. 59-2
Examples include coupled dye-releasing compounds described in specifications such as No. 31040.

Another particularly preferred negative-tone dye-providing substance of the coupled dye-forming compound is one represented by the following general formula (a).

Ikkaku 9 formula (a) Cp-←JT-type B) In the formula, Cp represents an organic group that can react with the oxidized form of the reducing agent (coupling reaction) to form a diffusible dye, and J is It represents a divalent bonding group substituted at the active site of the coupler, and B represents a ballast group.

Here, the ballast group is a group that substantially prevents the dye-donating substance from diffusing during heat development processing, and includes groups (such as sulfo groups) that exhibit this effect depending on the nature of the molecule, and groups that exhibit this effect depending on the size of the molecule. The coupler residue represented by Cp, which refers to a group (such as a group with a large number of carbon atoms), has a molecular weight of 700 to improve the diffusibility of the dye formed.
It is preferably 500 or less, more preferably 500 or less.

The ballast group is preferably a group having 8 or more carbon atoms, more preferably 12 or more carbon atoms, or a sulfo group, a group containing both is even more preferable, and a group that is a polymer chain is even more preferable.

The coupling dye-forming compound having a group as a polymer chain is preferably one having a polymer chain having a repeating unit derived from a monomer represented by formula (b) as the above group.

General formula (b) Cp-+J+-+Y+T+Z+-+L) In the formula, Cp, J
has the same meaning as defined in general formula (a), Y represents an alkylene group, arylene group or aralkylene group, 2 represents O or 1, Z represents a divalent organic group, L
represents an ethylenically unsaturated group or a group having an ethylenically unsaturated group.

Specific examples of coupling dye-forming compounds represented by general formulas (a) and (b) include JP-A-59-124339
No. 59-181345, No. 60-2950, JP-A-61-57943, JP-A-61-59336, U.S. Pat. No. 4,631.251, U.S. Pat. No. 4,650,748
4,656.124, particularly the specifications of U.S. Patent No. 4,656.124, U.S. Pat. Preferred are the polymeric dye-providing materials described in the book.

As a positive dye-donating substance, for example, JP-A-59-
Dye developer compound-1 described in publications such as No. 55430 and No. 59-165054, for example, JP-A No. 59-1544
Compounds that release diffusible dyes by intramolecular nucleophilic reactions as described in publications such as No. 45 and No. 59-766954, for example, cobalt complex compounds described in publications such as JP-A-59-116655; No. 59-124327,
There are compounds that lose their dye-releasing ability when oxidized and are described in publications such as No. 59-152440.

The residue of the diffusible dye in the dye-providing substance used in the present invention preferably has a molecular weight of 800 or less, more preferably 600 or less, in order to improve the diffusibility of the dye. Examples include residues such as azomethine dyes, anthraquinone dyes, naphthoquinone dyes, styryl dyes, nitro dyes, quinoline dyes, carbonyl dyes, and fluorocyanine dyes. These dye residues may be in a temporarily shortened form that can restore color during thermal development or transfer. In addition, these dye residues are used for the purpose of improving the light resistance of images, for example, in JP-A-59-48765 and JP-A-59-48765.
A chelatable dye residue described in No. 124337 is also a preferred form.

These dye-donating materials may be used alone or in combination of two or more. The amount used is not limited and depends on the type of dye-providing substance, whether it is used alone or in combination, or whether the photographic constituent layer of the light-sensitive material of the present invention is a single layer or a multilayer of two or more types. It may be determined accordingly, but for example, the amount used is 0.005 to 50 g per 1 d, preferably 0.
．． 1 g to 10 g can be used.

The dye-providing substance used in the present invention can be incorporated into the photographic constituent layer of the heat-developable light-sensitive material using any method. Cresyl phosphate, etc.) and then subjected to ultrasonic dispersion, or dissolved in an alkaline aqueous solution (e.g., 10% sodium hydroxide aqueous solution, etc.) and then neutralized with an acid (e.g., citric acid or nitric acid, etc.). Alternatively, it can be used after being dispersed in a ball mill with an aqueous solution of an appropriate polymer (eg, gelatin, polyvinyl butyral, polyvinylpyrrolidone, etc.).

Next, the photosensitive silver halide used in the present invention will be described. Any silver halide can be used, and examples thereof include silver chloride, silver bromide, silver iodide, silver chlorobromide, silver chloroiodide, and silver iodobromide. The photosensitive silver halide can be prepared by any method commonly used in the photographic field, such as a single jet method. According to a preferred embodiment, silver halide emulsions having shelled silver halide grains can be used.

Furthermore, it is possible to use an emulsion containing grains having a multilayer structure in which the halogen composition of the grains differs on the surface and inside. For example, a silver halide emulsion having core/shell type silver halide grains in which the halogen composition changes stepwise or continuously can be used.

In addition, its shape is cubic, spherical, octahedral, dodecahedron,
It can be used whether it has a clear crystal habit such as a tetradecahedron or not. This type of silver halide is described in JP-A-60-215948.

Also, for example, JP-A-58-111933, JP-A No. 58-1
1.1934, 58-108526, Research
As described in Disclosure No. 22534, etc., the particle has two parallel crystal planes, and each of these crystal planes has a larger area than other single crystals of this particle, and its aspect ratio That is, it is also possible to use a silver halide emulsion containing tabular silver halide grains having a grain diameter to thickness ratio of 5:1 or more.

Further, in the present invention, a silver halide emulsion containing internal latent image type silver halide grains whose surfaces are not coupled in advance can be used. For internal latent image type silver halide whose surface is not prefogged, for example, U.S. Pat.
, No. 592, 250, No. 3,206.31.3, No. 3
, No. 317,322, No. 3,511,622, No. 3,
No. 447,927, No. 3,761,266, No. 3,7
No. 03.584, No. 3,736.140, etc., as described in each of the above specifications,
These are silver halide grains in which the sensitivity inside the grain is higher than the sensitivity on the surface of the silver halide grain. Also, US Patent Tube 3
Silver halide emulsions having silver halide grains incorporating polyvalent metal ions as described in US Pat. A silver halide emulsion in which the grain surface of silver halide grains containing a dopant is weakly chemically sensitized as described in Patent No. 3,761.276, or JP-A-50-8524 and JP-A-50-38525. These include silver halide emulsions comprising grains having a laminated structure as described in Japanese Patent Application Laid-open Nos. 52-156614 and 1987-127549.

The light-sensitive silver halide emulsion may be chemically sensitized by any method in the photographic art.

The silver halide in the above-mentioned photosensitive emulsion may be coarse or fine, but the preferred grain size is about 0.001 μm to about 1.5 μm, more preferably about 0.001 μm to about 1.5 μm, and more preferably about 0.001 μm to about 1.5 μm. .01 μm to 0.5 μm.

In the present invention, as another method for preparing silver halide for light-sensitive materials, it is also possible to allow a photosensitive silver salt-forming component to coexist with an organic silver salt described below, and to form a photosensitive silver halide in a part of the organic silver salt. .

These photosensitive silver halides and photosensitive root salt-forming components can be used in combination in various embodiments, and the amount used is preferably 0.001 g to 50 g, and more preferably Preferably, it is 0.1 to Log.

Typical spectral sensitizing dyes used in the present invention include, for example, cyanine, merocyanine, complex (that is, trinuclear or tetranuclear) cyanine, holobola-cyanine,
Examples include styryl, hemicyanine, oxonol, and the like.

The amount of these sensitizing dyes added is preferably lXl0 per mole of photosensitive silver halide or silver halide forming component.
−'mol−1 mole. More preferably, 1. Xl
0-' to lXl0-' moles.

The enhancing dye may be added at any stage of the preparation of the silver halide emulsion. That is, it may be carried out at any time, such as when silver halide grains are formed, when soluble salts are removed, before the start of chemical sensitization, during chemical sensitization, or after the end of chemical sensitization.

In the heat-developable photosensitive material of the present invention, various organic silver salts can be used, if necessary, for the purpose of increasing sensitivity and improving developability.

Examples of organic silver salts that can be used in the heat-developable photosensitive material of the present invention include JP-B No. 53-4921 and JP-A No. 49-52.
No. 626, No. 52-141222, No. 53-3622
No. 4, No. 53-37626, and No. 53-3761
Publications such as No. 0 and U.S. Patent No. 3,330,633, U.S. Patent No. 3,794,496, and U.S. Patent No. 4.105.451
Silver salts of long-chain aliphatic carboxylic acids and silver salts of carboxylic acids having heterocycles, such as silver laurate, silver myristate, silver valmitate, and stearic acid, as described in the specifications of I, arachidonic acid S, behenic acid 1
Silver aromatic carboxylates such as silver α-(1-phenyltetrazolethio)acetate, such as silver benzoate, silver phthalate, etc., Japanese Patent Publication No. 44-26582, No. 45-12700
No. 45-18416, No. 45-22185, JP-A-52-137321, JP-A-58-118638
No. 58-118639, U.S. Patent No. 4,123,
There are silver salts of imino groups described in various publications such as No. 274.

Other silver complex compounds with a stability constant of 4.5 to 10.0 as described in JP-A No. 52-31728, and imizolithion as described in U.S. Pat. No. 4,168,980. Silver salt etc. are used.

Among the above-mentioned silver salts, imino group silver salts are preferred,
Particularly preferred are silver salts of benzotriazole, more preferably 5-methylbenzotriazole and its derivatives, sulfobenzotriazole and its derivatives, and N-alkylsulfamoylbenzotriazole and its derivatives.

The organic silver salts used in the present invention may be used alone or in combination of two or more. Alternatively, the silver salt may be prepared in a suitable binder and used as is without isolation.
The isolated product may be used after being dispersed in a binder by an appropriate means. Examples of the dispersion means ζ include, but are not limited to, ball mills, sand mills, colloid mills, vibration mills, and the like.

In addition, the method for preparing organic silver salts is as follows: - For boat fishing, a method is used in which silver nitrate and raw materials are dissolved and mixed with organic compounds in water or an organic solvent, but if necessary, a binder may be added. It is also effective to add an alkali such as sodium hydroxide to promote dissolution of the organic compound, or to use an ammoniacal silver nitrate solution.

The amount of the organic silver salt used is generally preferably 0.01 to 500 moles, more preferably 0.1 to 100 moles, per mole of photosensitive silver halide. More preferably 0
．． It is 3 to 30 moles.

Reducing agent used in the photothermographic material of the present invention (reducing agent precursor is also included in the reducing agent herein)
Those commonly used in the field of heat-developable photosensitive materials can be used.

Examples of reducing agents that can be used in the present invention include U.S. Pat. Nos. 3,531,286 and 3,761,27.
No. 0, Specifications of No. 3, No. 764, No. 328, and R
D (Research Disclosure) Floor 12146, Room 15108, Room 15127, and JP-A-56-27
No. 132, U.S. Pat. No. 3,342,599. No. 3,719,492, each specification, JP-A-53-135
p described in each publication such as No. 628 and No. 57-79035
- phenylene diamine and p-amine phenolic developing agents, phosphoramidophenol type, sulfonamide aniline type developing agents, hydrazone type color developing agents and their brecassers, or phenols, sulfonamide phenols, or polyhydroxy Benzenes, naphthols, hydroxybinaphthyls and methylene bisnaphthols, methylene bisphenols,
Ascorbic acid, 3-virapritons, and pyrazolones can be used.

As a particularly preferable reducing agent, JP-A-56-I46133
N-(p-N
+N-dialkyl) phenylsulfamate.

Two or more types of the above-mentioned reducing agents may be used simultaneously.

The amount of the reducing agent used in the heat-developable photosensitive material of the present invention depends on the type of photosensitive silver halide used, the type of organic acid silver salt, the type of other additives, etc., and is not necessarily constant. However, it is usually preferably in the range of 0.01 to 1500 mol, preferably 0.1 to 200 mol, per 1 mol of photosensitive silver halide.

Furthermore, binders that can be used in the heat-developable photosensitive material of the present invention include gelatin derivatives such as polyvinyl butyral, polyvinyl acetate, ethyl cellulose, polymethyl methacrylate, cellulose acetate butyrate, polyvinyl alcohol, polyvinyl pyrrolidone, gelatin, and phthalated gelatin. , cellulose derivatives, proteins,
There are synthetic or natural polymeric substances such as starch and gum arabic, and one or more of these can be used in combination. In particular, it is preferable to use gelatin or a derivative thereof together with a hydrophilic polymer such as polyvinylpyrrolidone or polyvinyl alcohol, and more preferably to use a mixed binder of gelatin and polyvinylpyrrolidone as described in JP-A No. 59-229556. It is to use.

The preferred amount of the binder used is usually 0.05 g to 50 g per 1 d of support, more preferably 0.1 g to 50 g.
It is 10g.

In addition, the binder is 0.1% per 1g of the dye-providing substance.
~Log is preferably used, more preferably 0.2
It is 5 to 4 g.

The heat-developable photosensitive material of the present invention can be obtained by forming a photographic constituent layer on a support, and examples of the support that can be used here include polyethylene film, cellulose acetate film, polyethylene terephthalate film, and polyethylene terephthalate film. Synthetic plastic films such as vinyl chloride, paper supports such as photographic base paper, printing paper, baryta paper and resin coated paper, and supports obtained by coating and curing electron beam curable resin compositions on these supports. Examples include the body.

It is preferable that various heat solvents be added to the photothermographic material of the present invention and/or the image receiving member of the present invention. A thermal solvent is a compound that promotes thermal development and/or thermal transfer. These compounds include, for example, U.S. Pat.
, 347, 675. No. 3゜667.959, (
RD Research Disclosure) Kan 17643 (X
IT), JP-A-59-229556, 59-687
No. 30, No. 59-84236, No. 60-191251
No. 60-232547, No. 60-14241,
Publication No. 61-52643, Japanese Patent Application No. 1983. -2187
No. 68, No. 60-181965, No. 60-18463
No. 7, etc., U.S. Patent No. 3,438,776, U.S. Patent No. 3.66
6477, 3,667.959 specifications, JP-A-51-19525, JP-A-53-24829, JP-A-53-
No. 60223, No. 58-118640, No. 58-19
Examples of organic compounds having polarity such as those described in the 8038 specification include urea derivatives (eg, dimethylurea, diethylurea, phenylurea, etc.), which are particularly useful in carrying out the present invention. Amide derivatives (e.g., acetamide, benzamide, p-toluamide, p-butoxybenzamide, etc.), sulfonamide derivatives (e.g., benzenesulfonamide, α-toluenesulfonamide, etc.), polyhydric alcohols (e.g.,
1,5-bentanediol, 1,6-hexanediol, 1,2-cyclohexanediol, pentaerythritol, trimethylolethane, etc.), or polyethylene glycols.

As the above-mentioned thermal solvent, a water-insoluble solid thermal solvent is more preferably used. Here, the water-insoluble solid thermal solvent refers to
Although it is a solid at high temperatures (60°C or higher, preferably 10°C or higher,
0°C or higher, particularly preferably 130°C or higher and 250°C or lower)
It is a compound that becomes liquid, and the inorganic/organic ratio (“
Organic Conceptual Diagram (Yoshio Koda, Sankyo Publishing ■, 1984) is 0.
5-3. O1 preferably ranges from 0.7 to 2.5, particularly preferably from 1.0 to 2.0.

Specific examples of the above-mentioned water-soluble heat solvent include, for example,
It is described in No.-278331 and No. 60-280824.

Examples of the layer to which a heat solvent is added include a photosensitive silver halide emulsion layer, an intermediate layer, a protective layer, an image receiving layer of an image receiving member, etc., and the heat solvent is added to each layer so as to obtain an effect depending on each layer.

The preferred amount of the heat solvent added is usually 10% to 500% by weight, more preferably 30% to 200% by weight of the binder amount.
Weight%.

The organic silver salt and the thermal solvent may be dispersed in the same dispersion. The same binder, dispersion medium, and dispersion device as used for producing each dispersion can be used.

The photothermographic material of the present invention may contain various additives in addition to the above-mentioned components, if necessary.

A color toning agent known in heat-developable light-sensitive materials may be added to the heat-developable light-sensitive material of the present invention as a development accelerator. As a color toning agent, for example, JP-A-46-49
No. 28, No. 46-6077, No. 49-5019,
No. 49-5020, No. 49-95215, No. 49-
No. 1.07727, No. 50-2524, No. 50-67
No. 132, No. 50-67641, No. 50-11421
No. 7, No. 52-33722, No. 52-99813,
No. 53-1020, No. 53-55115, No. 53-
No. 76020, No. 53-125014, No. 54-15
No. 6523, No. 54-1565324, No. 54-15
No. 6525, No. 54-156526, No. 55-406
Publications such as No. 0, No. 55-4061, No. 55-32015, and West German Patent No. 2,140,406, No. 2
, 141.063, 2,220,618, U.S. Pat. No. 57-207244, No. 57-207245,
There are compounds described in various publications such as No. 58-1896328 and No. 5B-193541.

Other development accelerators include compounds described in JP-A-59-177550 and JP-A-59411636.

Further, development accelerator releasing compounds described in Japanese Patent Application No. 59-280881 can also be used.

As the anti-fogging agent, the following can be used in combination with the compound of the present invention having a fog-inhibiting function. For example, the higher fatty acids described in U.S. Patent No. 3,645°739,
Mercury salts described in Japanese Patent Publication No. 51-47419, N-halogen compounds described in JP-A No. 51-47419, U.S. Patent No. 3,70
No. 0,457, JP-A No. 51-50725 f [
I4 Mercapto compound-releasing compound described above, 49-
Arylsulfonic acid described in Publication No. 125016, 5
Carboxylic acid lithium salt described in Publication No. 1-47419,
British Patent No. 1,455,271, Japanese Unexamined Patent Publication No. 1983-
Oxidizing agent described in Publication No. 101,019, No. 53-198
Sulfinic acids or thiosulfonic acids described in Publication No. 25, 2-thiouracils described in Publication No. 51-3223, simple sulfur described in Publication No. 51-26019,
-42529, 51-81124, 55-93
Disulfide and polysulfide compounds described in Publication No. 149, rosin or diterpenes described in Publication No. 51-57435, polymer acids having free carboxyl groups or sulfonic acid groups described in Publication No. 51-104338, US patent Thiazolinthione described in the specification of No. 4.138.265, JP-A-5/1-5+, 821
No. 1, as described in U.S. Pat. No. 4,137,079. 2. 4-Triazole or 5-mercapto-1,2,4-)riazole, JP-A-55-1408
Thiosulfinate esters described in No. 83, No. 55-
1.2゜3.4-thiatriazoles described in Publication No. 142331, No. 59-46641, No. 59-5723
No. 3, dihalogen compounds or trihalogen compounds described in Publication No. 59-57234, and furthermore, No. 59-11.
Thiol compound described in Publication No. 1636, No. 60-19
Hydroquinone derivatives described in Publication No. 8540, No. 60
Examples include the combined use of a hydroquinone derivative and a benzotriazole derivative as described in Japanese Patent No. 227255.

Other particularly preferred antifoggants that can be used in combination include inhibitors having a hydrophilic group as described in JP-A-62-18554, and polymer inhibitors as described in JP-A-62-1214.52. , Japanese Patent Publication No. 62-123456
Examples include the inhibitors having a ballast group described in No.

Furthermore, inorganic or organic bases or base precursors can be added. Examples of base precursors include compounds that decarbonize with heating and release basic substances (e.g. guanidinium trichloroacetate), compounds that decompose through reactions such as intramolecular nucleation substitution reactions and release amines, etc. For example, Japanese Patent Application Publication No. 56-130745, Japanese Patent Application Publication No. 56-132332, British Patent No. 2,079,
No. 480, US Pat.
No. 59-180537 - No. 59474830, No. 5
Examples include base release agents described in Japanese Patent No. 9-195237 and the like.

In addition, various additives used in heat-developable photosensitive materials as necessary, such as antihalation dyes, fluorescent brighteners, hardeners, antistatic agents, plasticizers, spreading agents, matting agents, and surfactants. , anti-fading agents, etc., specifically RD (
Research Disclosure Magazine Vol. 1.170, .
June 1978 NQ17029, patent application 1986-276
It is described in No. 615, etc.

The heat-developable photosensitive material of the present invention contains (a) photosensitive silver halide, a (bl reducing agent, an fcl binder, and a (d1 dye-providing substance). Furthermore, if necessary, it may contain (e) a silver. Basically, these may be contained in one heat-developable photosensitive layer, but they do not necessarily have to be contained in a single photographic constituent layer.For example, the heat-developable photosensitive layer may be divided into two layers. , (a), (b), (C1゜(e)
It is also possible to have a structure in which one of the heat-developable photosensitive layers contains a component, and the other layer adjacent to this photosensitive layer contains a dye-providing substance (dl), and two or more components can react with each other. It may be contained separately in the constituent layers.

Further, the heat-developable photosensitive layer may be divided into two or more layers: a low-sensitivity layer and a high-sensitivity layer, a high-density layer and a low-density layer, or more.

The heat-developable photosensitive material of the present invention has one or more heat-developable photosensitive layers. In the case of full-color photosensitive materials,
Generally, it has three heat-developable photosensitive layers with different color sensitivities, and in each photosensitive layer, dyes with different hues are formed or released by heat development.

Usually, a yellow dye is used in the blue-sensitive layer, a magenta dye is used in the green-sensitive layer, and a cyan dye is used in the red-sensitive layer, but the combination is not limited thereto. It is also possible to combine a near-infrared sensitive layer.

The structure of each layer can be arbitrarily selected depending on the purpose. For example, a structure in which a red-sensitive layer, a green-sensitive layer, and a blue-sensitive layer are sequentially formed on a support, or a blue-sensitive layer is sequentially formed on a support. , a green-sensitive layer, a red-sensitive layer, or a green-sensitive layer, a red-sensitive layer, and a blue-sensitive layer sequentially on the support.

In addition to the heat-developable photosensitive layer, the photothermographic material of the present invention can be provided with non-photosensitive layers such as an undercoat layer, an intermediate layer, a protective layer, a filter layer, a banking layer, and a release layer.

To coat the heat-developable photosensitive layer and these non-photosensitive layers on the support, a method similar to that used for coating and preparing general silver halide photosensitive materials can be applied.

The heat-developable photosensitive material of the present invention usually preferably has a
0°C to 200'C1, more preferably 100°C to 170°C
Developing can be carried out simply by heating within a temperature range of, preferably 1 second to 180 seconds, more preferably 1.5 seconds to 120 seconds. Transfer of the diffusible dye to the image-receiving layer may be carried out simultaneously with heat development by bringing the image-receiving member into close contact with the light-sensitive surface of the photosensitive material and the image-receiving layer during heat development, or by bringing the image-receiving member into close contact with the image-receiving member after heat development. Alternatively, the transfer may be performed by supplying water and then applying heat if necessary. Moreover, you may perform preheating in the temperature range of 70 degreeC - 180 degreeC before exposure. In addition, as described in Japanese Patent Application Laid-Open No. 60-143338 and Japanese Patent Application No. 60-3644, in order to improve mutual adhesion, the photosensitive material and image receiving member are heated at 80°C to 250°C immediately before thermal development transfer. Each may be preheated at different temperatures.

Various heating means can be used for the heat-developable photosensitive material of the present invention.

As the heating means, any method that can be applied to ordinary heat-developable photosensitive materials can be used, such as contacting with a heated block or plate, contacting with a heated roller or drum, or passing through a high-temperature atmosphere. Alternatively, high-frequency heating may be used, or furthermore, a conductive layer containing a conductive substance such as carbon black may be provided on the back surface of the photosensitive material of the present invention or the back surface of the image receiving member for thermal transfer, and the Joule heat generated by energization may be utilized. You can also do that. There are no particular restrictions on the heating pattern, including methods of preheating (preheating) and then reheating, heating at a high temperature for a short time, or at a low temperature for a long time, continuously rising, continuously falling, or both. Repeated or even discontinuous heating is possible, but a simple pattern is preferred. Alternatively, a method in which exposure and heating proceed simultaneously may be used.

The image-receiving layer of the image-receiving member that can be effectively used in the image-receiving member of the present invention may be any layer having the function of receiving the dye in the heat-developable photosensitive layer released or formed by heat development. Polymers containing amines or quaternary ammonium salts as described in US Pat. No. 3,709,690 are preferably used. A typical image-receiving layer for diffusion transfer is obtained by mixing a polymer containing ammonium salt, tertiary amine, etc. with gelatin, polyvinyl alcohol, etc., and coating the mixture on a support.

Another useful dye-receiving material is JP-A-57-207
Examples include those formed from a heat-resistant organic polymer substance having a glass transition temperature of 40° C. or higher and 250° C. or lower, as described in Japanese Patent No. 250 or the like.

These polymers may be supported on a support as an image-receiving layer (or they may themselves be used as a support).

Examples of the heat-resistant polymer substances include polystyrene, polystyrene derivatives having a substituent having 4 or less carbon atoms, polyvinylcyclohexane, polydivinylbenzene, polyvinylpyrrolidone, polyvinylcarbazole, polyallylbenzene, polyvinyl alcohol, polyvinyl formal, and polyvinyl. Polyacetals such as butyral, polyvinyl chloride, chlorinated polyethylene, polytrichloride fluorinated ethylene, polyacrylonitrile, poly-N.

N-dimethylallylamide, polyacrylate with p-cyanophenyl group, pentachlorophenyl group and 2,4-dichlorophenyl group, polyacrylchloroacrylate, polymethyl methacrylate, polyethyl methacrylate, polypropyl methacrylate, polyisopropyl methacrylate, polyisobutyl Polyesters such as methacrylate, poly-tert-butyl methacrylate, polycyclohexyl methacrylate, polyethylene glycol dimethacrylate, poly-2-cyano-ethyl methacrylate, polyethylene terephthalate,
Examples include polysulfone, polycarbonates such as bisphenol A polycarbonate, polyanhydrides, polyamides, and cellulose acetates. Also,
"Borimano 1 Dobusoku, 2nd Edition"
(edited by Joy Brandrup and E.H. Inmargat), published by John Willian and Sands (Poly
mer Handbook 2nd ed, (J,B
randrup, IE, Il, Immergut (eds.)
Also useful are synthetic polymers with glass transition temperatures of 540°C or higher, as described in John Wiley &5ons'H. - For boat fishing, a molecular weight of 2,000 to 200,000 is useful for the polymeric substance. These polymeric substances may be used alone or in a blend of two or more thereof, or may be used in combination of two or more as a copolymer.

A particularly preferable image-receiving layer is JP-A-59-22342
Examples include a layer made of polyvinyl chloride described in Japanese Patent Application No. 5, and a layer made of polycarbonate and a plasticizer described in JP-A-60-19138.

These polymers can also be used as a support and an image-receiving layer (image-receiving member), in which case the support may be formed from a single layer or from multiple layers. good.

Supports for image-receiving members include transparent supports, films made of styrene, polyvinyl chloride, polyethylene, polypropylene, etc., and pigments such as titanium oxygen, barium sulfate, calcium carbonate, and talc contained in these supports. Supports, baryta paper, RC paper laminated with thermoplastic resin containing pigments on paper, cloth, glass, metals such as aluminum, etc., and electron beam curing with pigments on these supports. Examples include a support coated with a synthetic resin Mi woven material and cured, and a support coated with a pigment-containing coating layer on these supports. Furthermore, patent application 1986-1269
The cast coat described in No. 72 is also useful as a support.

In addition, a support with a pigment-containing electron beam curable resin composition coated and cured on paper, or a support with a pigment coating layer on paper and an electron beam curable resin composition on the pigment coating layer. The resin layer of the support coated with and cured can be used as an image-receiving layer, so it can be used as is as an image-receiving member.

The heat-developable photosensitive material of the present invention is published in RD (Research Disclosure Magazine) No. 15108, JP-A-57-1984.
No. 58, No. 57-207250, No. 61-80148
The photothermographic material may be a so-called monosheet type photothermographic material in which a photosensitive layer and an image-receiving layer are formed on the same support, as described in the above publication.

It is preferable that the heat-developable photosensitive material of the present invention is provided with a protective layer, in which the compound of the present invention is contained.

Various additives used in the photographic field can be used in the protective layer. The additives include various capping agents, colloidal silica, slipping agents, organic fluoro compounds (especially fluorine surfactants), antistatic agents, ultraviolet absorbers,
High-boiling organic solvents, antioxidants, hydroquinone derivatives,
Examples include polymer latex, surfactants (including polymeric surfactants), hardeners (including polymeric hardeners), organic silver salt particles, non-photosensitive silver halide particles, and the like.

These additives are described in RD (Research Tisphroger Magazine) Vol. 170. June 1978, No. 17029, and Japanese Patent Application No. 276615/1982.

〔Example〕

Hereinafter, specific examples of the present invention will be described. However, as a matter of course, the present invention is not limited to the examples described below.

Example 1 In this example, a silver iodobromide emulsion, a dispersion of an organic silver salt and a heat solvent, a dye-providing substance dispersion, and a reducing agent dispersion were prepared as follows, and these were used to heat the A developable color photosensitive material was prepared. Further, an image receiving member was prepared as described below.

■Preparation of silver iodobromide emulsion At 50°C, JP-A No. 57-92523, No. 57-
An aqueous solution containing 11.6 g of potassium iodide and 131 g of potassium bromide in solution (A) in which 20 g of ossein gelatin, 1000 g of distilled water, and ammonia were dissolved using the mixer shown in No. 92524. (B
)/i 500mZ and (C) solution 500-, which is an aqueous solution containing 1 mol of silver nitrate and ammonia, were simultaneously
Ag was added while keeping it constant.

The shape and size of the emulsion grains to be prepared were adjusted by controlling pH lp, Ag, and the addition rates of solutions (B) and (C). In this way, a core emulsion with a silver iodide content of 7 mol %, regular octahedral grains, and an average grain size of 0.25 μm was prepared.

Next, a core/shell type silver halide emulsion with a regular octahedron and an average grain size of 0.3 μm was prepared by coating a silver halide shell with a silver iodide content of 1 mol % in the same manner as above. (monodispersity was 9%). The emulsion thus prepared was washed with water and desalted.

■Preparation of photosensitive silver halide dispersion Add the following ingredients to 700 ml of the silver iodobromide emulsion prepared as described above and perform chemical sensitization, spectral sensitization, etc. to achieve red sensitivity, green sensitivity, and blue sensitivity. Each photosensitive silver halide emulsion dispersion was prepared.

(a) Preparation of red-sensitive silver iodobromide emulsion Said silver iodobromide emulsion 70-4-hydroxy-6-methyl-1,3,3a, 7-tetrazaindene 0.4 g gelatin
32 g sodium thiosulfate
10 mg The following sensitizing dye (a) 1% methanol solution 80 mZ Distilled water 1200 mZ Sensitizing dye (a) (b) Preparation of green-sensitive silver iodobromide emulsion The above silver iodobromide emulsion 700 mZ4-
Hydroxy-6-methyl-1,3,3a, ? - Tetrazaindene 0.4 g Gelatin 32 g Sodium thiosulfate 10 ■The following sensitizing dye (b
) Methanol 1% solution 8〇- Dilute distilled water 1200 rr1
1 Muzzling dye (b) (c) Preparation of blue-sensitive silver iodobromide emulsion Said silver iodobromide emulsion 70-4-Hydroxy-6-methyl-1,3,3a, ? -Tetrazaindene 0.4g gelatin
32 g sodium thiosulfate
10 The following sensitizing dye (C) methanol 1% solution 0 mZ Distilled water 1200117 sensitizing dye (c) ■ Prepare a dispersion of silver and hot solvent based on the recipe below, the amount of organic silver salt and hot solvent? i) A solution was prepared.

Prescription 5-methylbenztria zole 1 unit 60.5 gp
~Tolylamide 346g Polyvinylpyro I tons (10%) 446m7--Water to make 2000g.

After dispersing in an alumina ball mill, the pH was adjusted to 5.5 with a 10% aqueous citric acid solution to prepare a dispersion of an organic silver salt and a thermophilic agent.

■-(11 Preparation of dye-donor dispersion-1) 35.5 g of the following polymeric dye-donor substance (1) and 5.0 g of the following hydroquinone compound were dissolved in 200 g of ethyl acetate, and 5 weight of Alkanol XC (manufactured by DuPont) % aqueous solution 124-, phenylcarbamoylated gelatin (Rouslow, Type 1
7819 P C) mixed with gelatin aqueous solution 720- containing 30.5 g and dispersed with an ultrasonic homogenizer,
After distilling off ethyl acetate, the pH was adjusted to 795-5.5 to obtain a dye-providing substance dispersion-1.

and polymeric dye-providing substance (1) hydroquinone compound H ■-(2) Dye-providing substance dispersion-2 Same as dye-providing substance-1 except that the dye-providing substance was changed to the following polymeric dye-providing substance (2) In this manner, dye-providing substance dispersion-2 was obtained.

Polymer dye-providing substance (2) y=40% ■-(3) Dye-providing substance dispersion-3 This is a process in which the dye-providing substance is replaced with the following polymeric dye-providing substance ( It was obtained in the same manner as above except that 3) was changed.

Polymer dye-donor substance (3) ■Preparation of reducing agent solution 23.3 g of the reducing agent shown below, 14.6 g of poly(N-vinylpyrrolidone), 0.50 g of the fluorinated surfactant shown below.
into water? 8, pH 5.5 and 250 mZ reducing agent? Yong? Got the night.

Surfactant ■Preparation of heat-developable color photosensitive material Using the above-prepared dispersion of organic silver salt and thermal solvent, silver halide emulsion, dye-providing substance dispersion, and reducing agent solution,
A color photosensitive material having a multilayer structure as shown in Table 1 was prepared.

Y-filter dye F-1 SO311 ■Preparation of image-receiving member walls 1 to 14 Prepare a coating solution for the image-receiving layer according to the following recipe, apply it to a thickness of 128 μm on photographic baryta paper with a wire bar, and dry. , image receiving member floors 1 to 14 were prepared.

The types and amounts of the compounds of the present invention contained in the image-receiving layer are shown in Table 2. However, when the compound of the present invention is a polymer, the amount is - Formula [■].

The amount of the monomer on the left represented by [~1] is shown. Example-
The same applies to the following descriptions. In Table 2,
The measurement results described later are also shown.

The heat-developable color photosensitive material was exposed to 800 CM S of blue light, green light, and red light through a step wedge. The photosensitive material and the image receiving element were quickly peeled off, and the yellow (Y) and magenta (yellow) and magenta (
The reflection densities of the M) and cyan (C) images were measured using a densitometer (PDA).
-65, manufactured by Konica ■). The maximum density (Dmax) and minimum density (Dmin) (fog) obtained are shown in Table 2.

Further, the obtained transferred image was irradiated with a 6000 W xenon lamp for 10 hours, and the minimum density (Dmin) after irradiation was measured.

As can be understood from the data on the lowest density after light irradiation with a xenon lamp, when an image receiving member to which the compound of the present invention is not added is used, the stain increase due to light irradiation is large (see data for image receiving member No. 1). On the other hand, when a comparative compound is used, the effect of suppressing staining is small if it is added in an amount that does not cause a decrease in density, and when it is added in an amount that suppresses an increase in staining, the maximum density Dmax also decreases (see data for image receiving member floors 2 and 3).

On the other hand, in the image receiving member using the compound of the present invention, the rise in stain is suppressed without reducing the maximum density Dvaax (see data for image receiving member floors 4 to 13). Further, when an experiment was conducted in which Comparative Compound A was used in combination with an appropriate amount, the effects of the present invention were exhibited, and the minimum concentration Dmin was also lowered. (Refer to the data for the image receiving part magnet 14).

When experiments were conducted on other examples of the compounds of the present invention, the effects of the present invention were similarly exhibited.

In addition, in the above color photosensitive material, the dye-providing substance in the fourth layer (green-sensitive layer), which is the second photosensitive layer, is the following coupler B,
When similar experiments were carried out using image receiving members Nos. 1 to 14 using the same photosensitive materials except for C, the effects of the present invention were similarly obtained without changing the coupler.

Coupler B Weight average molecular weight 12.400 Coupler C 3y=50% by weight Example 2 In this example, the compound of the present invention was contained in a heat-developable color photosensitive material. That is, the retention S1! of the color photosensitive material used in Example-1 (see Table 1 above)! A compound of the present invention or a comparative compound is added to IJ to prepare a photosensitive material r1.
kL1-13 were obtained. The types and amounts of compounds are shown in Table 3. Further, the image receiving member of Example-1 was exposed and developed using Light 1 in the same manner as in Example-1, and the obtained images were evaluated in the same manner. The results are shown in Table 3.

Note that photosensitive material oblique light 1 (no additive compound) is Example-1
It is the same as the photosensitive material used in , and is outside the scope of the present invention.

Further, the additive compound A used in photosensitive material oblique exposure 2 and 3 is the same compound as compound A used in Example-1.

Table 3 shows that when the heat-developable color photosensitive material according to the present invention is used, the occurrence of staining is small and the increase in minimum density is also suppressed.

Example-3 A photosensitive material and an image receiving member were produced in the same manner as in Example-1 and Example-2. The compounds and amounts added are shown in Table 4.

These combinations were evaluated in the same manner as in Example-1.

The results are shown in Table 4.

From the results in Table 4, it can be seen that similar excellent effects can be obtained when the compound of the present invention is added to both the image-receiving light member and the photosensitive material.

Example-4 An image-receiving member was produced by changing the support of the image-receiving layer in the image-receiving member used in Example-1 as shown in Table 5. The contents of the support and the type and amount of the compounds of the invention are shown in Table 5.

Using this, each image receiving member was evaluated in the same manner as in Example-1. The results are shown in Table 5.

Note that since the supports of the image receiving members 14 to 16 are transparent supports, the image densities shown in the table are transmission densities. The rest is the reflection density as in Examples 1 to 3.

From the results in Table 5, it can be seen that the effects of the present invention can be exhibited even in this example using various supports including a transparent support.

〔Effect of the invention〕

According to the present invention, it is an object of the present invention to provide a heat-developable photosensitive material and an image-receiving member, in which staining does not occur in the obtained image, the image has excellent storage stability, and the maximum density decreases little. I can do it.

Claims (1)

[Scope of Claims] 1. In a heat-developable color photosensitive material having a photographic constituent layer containing at least a photosensitive silver halide, a reducing agent, a dye-providing substance, and a binder on a support, at least one of the photographic constituent layers contains: A photothermographic material characterized by containing a compound represented by the following general formula [I]. General formula [I] R^1-(B^1)_n-A^1-O-A^2-(B^
2)_m-R^2R^1 and R^2 represent an optionally substituted alkyl group, aryl group, aralkyl group, or heterocyclic group. R^1 and R^2 may also jointly form a ring. A^1 and A^2 represent a carbonyl group or a sulfonyl group. B^1 and B^2 represent an oxygen atom or NR. Here, R represents a hydrogen atom or an alkyl group. n and m represent 0 or 1. 2. An image-receiving member having an image-receiving layer that receives an image by transferring a dye from a heat-developable photosensitive material, characterized in that the image-receiving layer contains a compound represented by the general formula [I] according to claim 1. Element.